Since the price and pics are so attempting, and after reading the review here http://www.caraudio.com/forum/showthread.php?t=367843&highlight=eonon, I also took a risk to buy an Eonon unit, it's E1062 (http://www.eonon.com/Specified-Car-Player/E1062.html?utm_source=caraudio.com&utm_medium=forum&utm_campaign=forum) for my Mazda-3.
Just got it a few days, I'm very happy, :D only 4 days until I received and well packed. And easily installed to my car, quite fit. Here're the pics after my installation.
http://i109.photobucket.com/albums/n76/alexortego/good2.jpg
http://i109.photobucket.com/albums/n76/alexortego/good3.jpg
http://i109.photobucket.com/albums/n76/alexortego/good.jpg
http://i109.photobucket.com/albums/n76/alexortego/good4.jpg

I think it is much better than the OEM deck, it could use some work. Mainly on the interface. So I'll take some modification to it, so that it can be compatible with my Iphone too. Any one have some ideas? I'd put some more pics after my work :D